Tire-inflating pump.



W S. JBES.

TIRE INFLATING FUN?.

APPLIOATXON FILED Mimes, 1914;

L1 155%39 Patented 00h27, i914.

. 2 SHEETS-SHEET l. .LE-n, ...L

CQJJQW.

TIRE NFLATING FEMP;

APPLmATIoN HLM) Mm. ns, 1914.

L E 55,43@ Mmmm ont. 2?, ma.

2 Mmmm-Smm 2.

WILLARD S. JOBES, OF SAN ANTONIO, TEXAS, ASSIGNOR TO JOSEPH`A.. GRAHAM, OF

SAN ANTONIO, TEXAS.

TIRE-INFLATING PUMP.

' 4.Specification of Letters Patent.

Patented Oct. 27, 1914.. y

Application filed March 28,1914. Serial No, 88,042.

To all whom it may concern: Be it known that I, WiLLARD S. Jonas, a citizen of the United States, residing at San Antonio, in the county of Bexar and State of Texas, have invented new .and useful Improvements in Tire-Inilatinv Pumps, of which the following is a specilication.

My present invention relates to improvements in air pumps or compressors and more especially to those of the type adapted for use upon automobiles or other vehicles for inflating pneumatic tires and other purposes.

The primary object of the pi'esent invention is to provide a relatively Simple and iifexpensive air pump which is capable of being readily applied toautomobiles or vehicles of differ-"nt typesand which isaetuated by rotation of a Wheel thereof, the pump being particularly adapted to be applied to one of the hub caps of one of the Wheels and connected to the tire whereby revolving of the wheel Will actuate the pump to produce a supply of compressed air.

To these and other ends, the invention consists in certain improvements, and coinbinations and arrangements of parts, all as l will be hereinafter more fully` described, the

novel features being pointed out particularly in the lclaims at the end of the lspecification.

In'the accompanying drawing z-Figure 1 isa side elevation of one of the wheels oi an automobile equipped with an airpump or compressor constructed in accordance with the presentwinvention; Fig. 2 represents an axial section through the pump on an enlarged scale; Fig. 3 representsa transverse section through the pump; Fig'. 4 represents a section on the line 4-4 of Figi 3.

Similar parts are designated bythe same reference characters in the several views.

In the present instance 1 designates one of the Wheels of an automobile or other vehicle, 2 representsn a fender therefor, the

fender being usually fixed to the body ofy the automobile and the body being supported on the axle of the wheel by springs. The Wheel has spokes '3 as usual` and the hub 4 ofthe Wheel is shown provided with other angular shape.

the usual hub cap-5, it beingv common to employ vhub caps in the form of a nut or yThe pump in the construction shown oo n- -sists of a casing forming a pair of axially-v 'alined cylinders 6 and ali-intermediate crank valve 15 through which the compressed air is delivered from the cylinder. The outlet A valves of the cylinders are connected to a common pipe 16, and this pipe is connected to aA check-valve 17, the latter being connected in turn by ali/ose 18, which is prefeiably flexible, to the-inflating valve 19 of the tire. In lorder to prevent pumping an excess amount of air into the tire, a relief or equalizingI valve is provided, the relief valve 20 being connected in the present instance to the pipe 16 and is held on its seat by a spring 21, this sprin being held under compression by means W ich is adjustable whereby the relief valve may be set to open at any pressure desired. In the present rinstance a threaded or adjustable plug` 22 acts upon the spring 21 to hold it under the desired degree ofcompression.

The pump, according to tlie present in vention, is rotatable with the Wheel. F or this purpose, a clutch member in the form of a socket 23 is fixed to one side of the ypump casing and has a chamber 24 shaped to .lit over the hub cap 5 of the wheel, a driving connection being thereby provided between the Wheel and pump.Y In order to retain the socket on the pump in proper engagement with the hub cap, a suitable numberof strapsZ 'or the like are pro` vided, -the outer ends of unich engage the respective cylinders, and the inner ends of the straps engage the spokes 3 of the wheel;

these straps acting to force the socket inember 23 toward the hub cap and to retain it in propel engagement therewith. During rotation of the Wheel, the crank shaft S is held stationary whereby the rotation of the pump casing relatively to the crank shaft` Will' cause reciprocation of the pump piss tons. In the present instance, a collar 28 is fitted over the outer end of the crank shaft 8 and has an opening 29 extending therethrough to-slidingly receive a. rod 30,`the latter extendingI perpendicularly upwardly' f its sliding engagement with the collar 28 i wheels of the,

permits relative vibration between the wheel andthe fender dueto the spring action between these. parts.

In operation, revolving ofA thewheel to which the pump'. is 4connected causes the pump to compress air, and this may occur either during the running of the automobile` or vehicle along the road or when the pump is attached to one of the rear or driving auto1nobile,'the pump bein operated by yjacking or lifting'sucli Whee from the running o the motor, 1

I claim as my inventiom- I l. In an air ump of the character described, the com ination with a casin having cylinders and pistons operative t erein, and a crank shaft for operating the pistons, of means for connecting the pum casin to revolve with the wheel of a vehlcle, an means adapted to be connected to the body o a vehicle and having a sliding connection with said shaft for preventing rotation of the crank shaft. Y l

2. The combination with an airY pump having reciprocatory operating the same, of a coupling adapted to fit upon andform a driving connection With the tion. of the pump therewith, and means for preventing rotation of the crank shaft.

3; The combination of an air pump having reciprocatory pistons and a shaft. fo r operating them,'-of means for connecting the pistons and a shaft forl hub cap of a wheel to cause rotafmnd and revolving it by they* the wheel? en v pum to revolve with the wheel of a vehicle, the s aft of thev pump being co-aXial-with said wheel, and -atrodadapted to be 'coil-l nected to the body of the vehicle and hav- 1n prventing rotation of the-pump shaft andA permitting yvibratory movement thereof.

4L vThe combination'with a vehicle wheel having an angular withan air ump asocket'secured to the pump and sha ed to t upon said angular projection and t ereby` form a driving connection with thewheel,

,and means-for preventing rotation of the 55 shaft.

5.`The combination with a vehicle wheel havinga hub ca 'of angular form thereon, a-pum havingplstons, and a shaft for actuatlng t e same, fit said'angular hub cap and thereby connect one art of the pump to'revolve ywith and means for preventing rotation of the ,other part of the pump.

6. The combinationwith a vehicle wheel 6.5

having a hub cap of angular form thereon,` a pump having pistons, and a shaft for actuating the same, a socket iixed to the pump and adapted to fit upon the hub cap to form a driving connection with the wheel, and a 70 vertical rod fixed at one vend and havinga I sliding engagement withthe pump shaft to prevent rotation thereof. l

In testimony whereof I have hereunto set my hand in presence of two subscribing wit- 75 IIGSSBS.

WILLARD s. JoBEs.

Witnesses:

Jnssn B. Woon, Josnrn GRAHAM a sliding connection with said shaft :for

rejection turnable therevavingreciprocatory pistons and a s aft for operating the same, of, e

an angular socket adapted to v 

